Check-valve.



No. 65!,964. Patehted lune I9, 1900.

T. .1. coon." CHECK VALVE.

(Application filed Oct. 28. 1899.)

(No Model.)

W/TNESSS Q Jgl ENT I? 0 A TTOHNE Y-i THE NORRIS PETERS o0, Puo'rauwa. WASHINGTON. u. c.

UNITED STATES PATENT omce;

THOMAS JAMES CODD, OF LONDON, ENGLAND.

CH ECK-VALVE.

SPECIFICATION forming part of Letterslatent No. 651,964, dated June 19, 190( Application filed October 26,1899. Serial No. 734,840. (No model.) I

To all whom it may concern:

Be it known that I, THOMAS JAMES Conn, a subject of the Queen of Great Britain, residing at Woodside, Fillebrook road, Leytonstone, London, Essex county, England, have invented certain new and useful Improvements in Check-Valves, of which the following isa full and complete specification,such as will enable those skilled in the art to which it appertains to make and use the same.

This invention relates to check-valves, being the same for which I applied in Great Britain on the 29th day of March, 1899, for provisional Letters Patent.

The object of this invention is to provide a valve of the class described which will eifectually prevent return how and by means of which the amount of flow may be readily regulated and which is particularly suited to regulation of the transmission of steam and hot water.

My invention is fully disclosed in the following specification, of which the accompanying drawings form a part, in which like ref-' erence characters denote like parts in the several views, and in which Figure l is a longitudinal section of a valve constructed according to my invention, several of the parts thereof being shown in'full lines; and Fig. 2, a section on the line 2 2 thereof looking in the direction of the adjacent arrow.

Referring more particularly to the draw- .ings, I have shown at 5 a valve-casing which is cylindrical in form and provided with end flanges 6, by means of which it may be connected and mounted as desired. The casing 5 is provided at one side with a threaded opening 7, by means of which any air or other pipe may be connected therewith.

A valve-seat consisting of an annular internally and obliquely arranged shoulder Sis provided beneath the threaded opening 7, and a valvesupporting plate 9 is pivoted, as at 10, adjacent the uppermost portion of the valve-seat 8 and provided at its outer end with a circular valve 11, which operates in connection with said valve-seat and is connected with the valve-supporting plate 9 by means of a bolt 12 passed through both and secured thereto by means of a nut 13. The

valve-supporting plate 9 is provided with a rigid projecting balance-rod 14, upon which is mounted a weight 15, and it will be seen be employed.

The balance-rod 14 operates within a chamber formed by a supplemental casin g 16,which is connected at top and bottom with the valvecasing 5. The supplemental casing 16 consists of two lobes, an upper lobe 17 and a lower lobe 18, of which the lobe 17 is the more bulbous and within which the balance-rod 14 operates, and the valve-casing. 5 is cut away at one side to form a communication with the supplemental casing 16, and said cut-away portion registers with the lower lobe 18 of the supplemental casing 16. Passed through a gland or packing 19, set into the casing-lobe 18, is an adjusting-screw 20, provided at its innerend withasegmentally-recessed head 21, which operates in connection with the curved head of the bolt 12, and it is evident that the degree of advancement of the screw 20 into the casing 18 and main casing 5 will determine the pivotal play of the valve 11'. The adj usting-screw 20 is provided at its outer'end with an operating-wheel 22, and lock-nuts 23 are passed upon the screw 20, as is a collar 24, by means of which the said adjusting-screw may be looked in adjusted position. I It is evident that the screw 20 may be advanced inwardly so far as to finally seat the valve,

with a balance device and means for reg-ulating the pivotal playof said valve, substantially as shown and described.

may be .operatedto. absolutelyprevent the pivotal movement of said valve, said valve being provided with a balance device, substantially as shownand described.

- 3. I An apparatus of the class described com prising-a cylindrical casing provided with a valve-seat, a valve pivotallyv mounted within said casing and adjacent said valve-seat and arranged to operate in connection therewith, saidvalve being provided with a projecting: balance-rod and a weight mounted upon said described.

mounted in said supplemental-casing and operating in connection with said valve to limit the play thereof, substantial ly as shown and 4. An apparatus of the class described comprising a cylindrical casing provided withan interiorly and obliquely'arranged valve-seat, a valve pivoted adjacentsaid valve-seat, a

supplemental casing connectedwith said cylindrical casing and communicating therewith and provided with two lobes or inemibers,a balance-rod connected with said valve and operating within the larger of said lobes,

and an adj Listing-screw operatively mounted in the smaller of said lobes and operating in connection with said valve to limit and regulate, the play thereof, substantially as shown and described. I

In testimony that I claim the foregoing as myinvention I have-signed my name, in presence of, the subscribing witnesses, this 13th 2 day of October, 1899.

balance-rod, asupplemental casing connected with said cylindrical casing. and communieating therewith and within which said' bal- I ance-rod operates, and an adjusting device, 5

THOMAS'JAMES CODD. Witnesses:

WALTER.ERNEST ROCHE, GEORGE WILLIAM SMITH. 

